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BENNING rectifiers for nuclear power plants – rectifier for stationary battery systems (KTA)
AC/DC rectifiers, DC power supply
Fields of application
Protected DC power supply for critical loads in nuclear power plants, both during grid and power outage: power plant equipment, signaling, control and protection electronics, telemetry, communication equipment, static inverters, motors and solenoid valves.
Features:
Operates on lead-acid or NiCd batteries; output voltages 24, 110 and 220 V
Manufactured according to KTA guidelines, suitable for any type of power plant
Controlled 6-pulse thyristor bridge, IU characteristic according to DIN 41773
Stability: voltage ±1 %, current ±2 %
Comprehensive monitoring and centralized fault signaling available on MCU 2000
Optional test equipment for repetitive measurements
In case of seismic requirements, the cabinets are additionally reinforced
SPECIFICATIONS
AVAILABLE MODELS
DOCUMENTS
SPECIFICATIONS
Manufacturer
BENNING
Series
Rectifiers for nuclear power plants
Device type
Thyristor rectifier for stationary battery systems in nuclear power plants; manufactured according to KTA guidelines
Output voltage
24, 110 and 220 V
Current range
24 V: 400-3000 A; 110V: 200-1600A; 220 V: 100-1200 A
Input
3 × 400 V, 50 Hz with neutral wire (other voltages on request)
Regulation
Controlled three-phase 6-pulse bridge with thyristors; ultra-fast fuses for semiconductors
Charging characteristic
IU according to DIN 41773; lead: float 2.23 V/cell, fast 2.4 V/cell, starting up to 2.7 V/cell (W characteristic); NiCd: 1.4 / 1.55 V/cell, starting up to 1.8 V/cell.
Stability
Voltage ±1 %; current ±2 %
Permissible deviations
Mains voltage ±10 %; frequency ±5 %; load 0–100 %
Pulsations
About 5 % (peak to peak) without battery, at 0-100 % load
Monitoring and alarm
Mains, fuse, overvoltage, ripple and short circuit monitoring; centralised fault signalling SME I; optional MCU 2000 with event memory
Cooling
Natural air (air enters from below)
Security class
IP20; color RAL 7035
Ambient temperature
–5…+40 °C; humidity class F according to DIN 40040
Standards
EMC EN 50081-2, EN 50082-2
Additional equipment
Battery switchboards BES 250–3200 A; test equipment for repetitive measurements
